Attachment for motor-vehicles.



F. F. HESS & W. W. SCOTT.

ATTACHMENT FOR MOTOR VEHICLES.

APPLICATION FILED MART 5. 19l5v.

Patented Mar. 4,1919.

FRED F.

UTWTfiE.

HESS AND WALTER W. SCOTT, 0F CHEHALI S, WASHINGTON, ASSIGNOIRS 0FONE-THIRD TO 0. J. ALBEBS, 0F CHEHALIS, WASHINGTON.

ATTACHMENT FOR MOTOBrVEHICLfi.

Specification of Letters Patent.

Application filed March a, 1915. Serial m. 12,395:

To all whom it may concern:

Be it known that we, FRED F, Hess and WALTER W. Scorn citizens of theUnited States, residing at (lhehalis, in the county of Lewis and Stateof Washington, have invented certain new anduseful Improvements inAttachments. for Motor-Vehicles; and we do hereby declare the followingto be a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which it appertains to make and use.the

same.

This invention relates to an auxiliary transmission designed forattachment to a Ford motor car, which type of car embraces two forwardspeeds, namely, high and low and a single reverse speed.

The object of the invention is to form the driven shaft of the motorvehicle in two sections, the forward section having connection with themain transmission and the rear section being connected up to thedifierential, the said sectionsbein adapted to have direct connectionduring t e driving of the car at high or low speed, and at a reversespeed, or to have such connection that the section leading to thedifierentlal w1ll be driven at varying speeds between the high and lowspeed and the reverse speed.

With these and other objects in view, the invention consists in thenovel combination and arrangement of parts which will be fully set forthin the following spec fication and accompanying drawings, 1n which:

Figurel is a top view in section of an auxiliary transmission and thepropeller shaft of a vehicle,

. Fig. 2 is a front'view of the controlllng lever showing the samepartly in section to more clearly struction, and

Fig. 3 is a side view of Fig. 2.

Referrin to the drawing by characters of reference, t e numeral 1deslgnates an elon 'ated housing for the driven shaft 4', wh ch ousinghas Its forward end provlded wlth an enlargement 2, carrylng a bearing 3to receive one end of the driven shaft, which is connected to the changespeed mechanism (not shown) adapted to be located 1n the casing A, whichis connected to the enlargement 2. The enlargement 2 is connected to thebody of the vehicle by the ordinary radius rods 5, The rear end of thehousing 1 terminates ina flange '6, which is secure illustrate thedetails of conto the cylindrical extension 7 of the auxiliarytransmission housing 8, which housing is provided with a suitablebearing sleeve 9 on which the'roller bearings 10 run. The driven shaft 4has connected thereto a shaft 10*, as shown at 11, and consists of frontand rear sections 12 and 14. The rear end of the section 12 is providedwith an axial bore 11 for the reception of the bushing 12 i which formsa bearing for the reduced extension 13 formed in the forward end of therear section 14, and which is rectangular in cross section. The rear endof the rear section 14 is carried on the roller bearings 15, which aremounted on the cylindrical extension 16 at the rear end of the housing8. A reduced cylindrical portion 16 having bearings 17 is formed on thebearing sleeve 9 and surrounds the connection 11 between .the frontsection 12 and the driven shaft 4. A suitable thrust bearing 17 iscarried in the extension 16, and the rear end of the section 14 isreduced, as at 18 and terminates in the tapered portion 19 which extendsinto a housing B, which incloses the differential gearing and hasconnection with the said gearing in any suitable manner. Th bored end ofthe section 10 extends partly into the housing 8 and carries the spurgear 20 which is formed with a suitable clutch sec tion 21 on its rearface, the use of which will appear as the description proceeds.

The housing 8 is formed with a pair of alining apertures 22 in which theplugs 23 and 28 are secured, and these plugs are provided with thecylindrical extensions 24 which form bearings for the counter-shaft 25on which the spur gear 26 is mounted. This spur gear meshes with thespur gear 20 as clearly shown and is used to drive the counter-shaft andthe spur gear 27 when the device is in operation. A suitable plug 28,similar to the plug 23, is located in the aperture 22 in the rear end ofthe housing 8 and also forms a bearing for the counter-shaft.

Slidable on the shaft section 14 is a suitable spu'r gear 29 which isformed with the clutch section 30, which clutch section is arranged toengage the clutch section 21 so that when the device is in high speed,the shaft section 14 will be driven at the same rate of speed as theshaft section 10 is driven. A suitable boss 31 is carried on the arm 32,which is mounted on the slidable rod 33, which rod is formed at itsforward end with a suitable universal joint 34, and this boss enga es ina groove formed in the sleeve 35 carrle by the gear 29. The rod 33 isformed with a plurality of depressions 36 which form notches in whichthe end of the latch 3 7 engages. This latch 37 is carried in the plug38 and is spring-pressed so as to be in engagementwith the walls of thenotches and hold the ears in the desired osition. Connected to t euniversal joint 34 1s a suitable rod 39, the forward end of which ispivotally connected as at 40 to the lower end 41 of the lever desi atedgenerall by the numeral 42. Thi's l dver is pivota 1y mounted betweenthe ears 43 and the lower portion 41 is formed with the axially threadedbore 44 in which the upper section 45 is threaded.

This upper section terminates in the handle portion 46 and the whole islocated within easy reach of the driver of the vehicle.

From the fore oing it will be apparent that in use-when 1t is desired tostop the vehicle the lever 42 is set to the neutral position so that thegear 29 is in the position illustrated in Fig. 1. When in this positionit will be apparent that any danger in cranking the motor is eliminatedas there is no possible way for the car to start which frequently occurswithout the use of this device as the clutch is apt to stick, due to theheavy oil used in connection therewith. In case the user wishes totravel at the usual rate of s eed, the lever is shifted so as to pullthe c utch section 30 into engagement with the clutch section 21 andthereby control the speed of the vehicle entirely from the engine andfrom the ordinary transmission. In case a heavy hill is encountered andit is necessary to shift the ear into intermediate position the'lever ist rown in the opposite direction, and it will be apparent that the gear29 will mesh with the gear 27 and the vehicle will be driven through thecountershaft 25 and the gears 20 and 26. It will thus be seen that thespeed will be reduced to a point intermediate the usual low speed andthe ordinary high speed. After the vehicle is brought to a standstillthe lever 42 may be shifted to a neutral position and in order toprevent unauthorized persons from using the car, the upper section 45may be unscrewed from the lower section 41 and locked in the car ortaken by the person using the vehicle. In this way it will be apparentthat any attempt to steal the vehicle will be frustrated as ower cannotbe transmitted to the rear whee s unless the gear 29 is in mesh with thegear 27, or the clutch half 30 is in mesh with the clutch half 21.

While in the foregoing there has been shown and described the referredembodiment of this invention, it is to be understood that such changesmay be made in the combination and arrangement of parts as will fallwithin the spirit and scope of the invention as defined in the a pendedclaim.

What is claime 1s:

A motor vehicle including a differential, a housing therefor, a drivenshaft, a housing for said shaft having its rear end spaced from thedifferential housing, a casing interposed between said housings andsecured to the differential housin a cylindrical portion secured to thecaslng and to the drive shaft housing, a shaft consisting of front andrear sections journaled in the casin and connected to said driven shaftand di ferential, a bearing sleeve carried by said cylindrical portion,a reduced cylindrical portion formed upon said sleeve and surroundingthe connection between the driven shaft and the shaft connected thereto,a bearing in said sleeve surrounding said connect- FRED F. HESS. W'IERW. SCOTT.

Witnesses:

W. R. JoHNeoN. 0. J. ms.

